Patents by Inventor Katumi Tokuda

Katumi Tokuda has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Fly-back transformer with a low ringing ratio
    Patent number: 4229786
    Abstract: In a fly-back transformer, the tertiary winding for obtaining the secondary B power source is wound in a position where the coupling with the primary winding is weak and where it interlinks the leakage flux of the secondary winding with the primary winding, and the output of the tertiary winding is rectified during the scanning period of a horizontal deflection circuit of a television receiver. Accordingly, only the wave crest value of the ringing is made smaller, regardless of the shot pulse to be obtained within the secondary winding.
    Type: Grant
    Filed: September 19, 1978
    Date of Patent: October 21, 1980
    Assignee: Murata Manufacturing Co., Inc.
    Inventors: Yutaka Mitani, Katumi Tokuda, Saburo Kitao
  • Fly-back transformer with a low ringing ratio
    Patent number: RE31119
    Abstract: In a fly-back transformer, the tertiary winding for obtaining the secondary B power source is wound in a position where the coupling with the primary winding is weak and where it interlinks the leakage flux of the secondary winding with the primary winding, and the output of the tertiary winding is rectified during the scanning period of a horizontal deflection circuit of a television receiver. Accordingly, only the wave crest value of the ringing is made smaller, regardless of the shot pulse to be obtained within the secondary winding.
    Type: Grant
    Filed: October 19, 1981
    Date of Patent: January 4, 1983
    Assignee: Murata Mfg., Co. Ltd.
    Inventors: Yutaka Mitani, Katumi Tokuda, Saburo Kitao